Here's something neat, "Protect" archetype

[Bluvista]

A gameplay style that involves special summoning from the hand during the opponents turn if certain conditions are met. 

The main extra deck type is Dark Synchro, a summoning method that does not exist in real life. For those unfamiliar with the concept. You take the Level of a "Dark Tuner" monster and you subtract it from the level of the other non - "Dark Tuner" monster in order to get the negative level of the Dark Synchro monster you are summoning. (2 - 10 = -8 )

Each non "Dark Tuner" member of the archetype has 3 effects. 

1. It cannot be destroyed by battle

2. Special summon during either players turn clause, if conditions are fulfilled.  

3. Some method of ATK boosting. (they all have 0 ATK and DEF. )

Ok, there are 3 branches of his archetype name-wise. 

The non "Dark Tuner" main deck monsters have "The One Worth Protecting" in their names. 

The archetypal Dark Tuner monsters have "The Protector" in their names. 

The archetypal Dark Synchro monsters have "The Protected" in their names. 

Ok, now that all of that's clear, let's begin. 

Main Deck first. 

The One Worth Protecting - Sly

Level: 4

LIGHT/Fiend/Effect

This card cannot be destroyed by battle. Once per turn, during either players turn, if the opponent special summons a monster to either players field, you can special summon this monster, (from your hand) in face-up attack position. While this card is on the field, it gains 500 ATK every time the opponent special summons a monster. 

ATK: 0

DEF: 0

 

The One Worth Protecting - Cross

Level: 4

LIGHT/Fiend/Effect

This card cannot be destroyed by battle. Once per turn, during either players turn, if you take 1000 or more points of damage, you can special summon this monster, (from your hand) in face-up attack position, and if you do, it's ATK becomes equal to the damage you recieved. 

ATK: 0

DEF; 0

 

The One Worth Protecting - Rapid

Level: 4

LIGHT/Fiend/Effect

This card cannot be destroyed by battle. Once per turn, during either players turn, if you have 2 or more LIGHT monsters in face-up attack position on your side of the field, you can special summon this monster, (from your hand) in face-up attack position. This cards original ATK is always equal to half of the combined total ATK of every other LIGHT monster on your side of the field. 

ATK: 0

DEF: 0

 

The One Worth Protecting - Rebound

Level: 4

LIGHT/Fiend/Effect

This card cannot be destroyed by battle. Once per turn, during either players turn, if your opponent destroys a card on the field through battle or card effect, you can special summon this monster, (from your hand) in face-up attack position, and if you do, you can return 1 monster on the opponents field to their hand. This card gains ATK equal to half of the original ATK of the monster returned by this card's effect. 

ATK: 0

DEF: 0

 

The One Worth Protecting - Spike

Level: 4

LIGHT/Fiend/Effect

This card cannot be destroyed by battle. Once per turn, during either players turn, when an opponents monster declares an attack, you can special summon this card, (from your hand) in face-up attack position, and if you do, this card gains ATK equal to half of the attacking monsters original ATK, also that attacking monster's ATK becomes equal to half of it's original ATK, and it must attack this card. 

ATK: 0

DEF; 0

 

I've gtg, i'll finish this later, but that's the non dark tuners of the deck, (there will be 3 dark tuners, small archetype) 

[Pommelo]

1 hour ago, Bluvista said:

small archetype

Well, considering it's you we're talking about, my friend Blu, that's pretty surprising xD. Anyway, this seems rather simple (in the positive sense) and solid to use, the conditions for these member's summoning doesn't seem to hard to meet, and they have an useful protection. The only worrisome part is that many of those effects, if not too complex, still depend in the opponent's play, which is often bad news. Having said that, allow me to help you with the card grammar of one of your cards, you can base the grammar of the others on this  

The One Worth Protecting - Sly

Level: 4

LIGHT/Fiend/Effect

Cannot be destroyed by battle. Once per turn, if your opponent Special Summons a monster(s) to either players field: You can Special Summon this monster (from your hand) Attack Position. Gains 500 ATK each time your opponent Special Summons a monster(s).

Well, I'm looking forward to seeing the rest of the archetype.

[Bluvista]

A continuance of the archetype, (i'll fix grammar at a later date)

The Dark Tuners:

The Protector - Dark Moon

Level: 6

DARK/Fiend/Dark Tuner/Effect

If there are no cards on your field, you can special summon this monster, (from your hand) Once per turn, you can special summon 1 level 4 or LIGHT Fiend monster from your GY.  

ATK: 0

DEF; 1000

 

The Protector - Eerie Sylph

Level: 8

DARK/Fiend/Dark Tuner/Effect

When a LIGHT monster is special summoned to your side of the field during your opponents turn, you can special summon this card, (from your hand or GY) in face up attack position. Once per turn, during either players turn, you can activate this effect, target 1 monster on the field, declare a level 1 - 8, that monsters level becomes the declared level until this turns end phase, and if it did, immediately after this effect resolves, Dark Synchro summon 1 Dark Synchro monster from your extra deck using this monster you control. You can only use each effect of "The Protector - Dusk Angel" once per turn. 

ATK: 1500

DEF: 0

 

The Protector - Dusk Angel

Level: 10

DARK/Fiend/Dark Tuner/ Effect

Once per turn, you can reveal this card, (from your hand) target 1 face-up monster on the field, it's effects are negated and it's level becomes 1, immediately after this effect resolves, Dark Synchro summon 1 Dark Synchro monster from your extra deck using the targeted monster, and this card, in your hand. You can only use this effect of "The Protector - Eerie Sylph" once per turn. You can banish this card from your GY, target 2 LIGHT monsters in your GY, add those targets to your hand. 

ATK; 2000

DEF: 2000

 

Dark Synchro Monsters: (There are 4, ordered from highest to lowest)

 The Protected - Angel Reaper

Level: - 9

LIGHT/Fiend/Dark Synchro/Effect

This card cannot be special summoned or set, except by Dark Synchro summon. This card cannot be targeted or destroyed by the opponents card effects, or by battle. If there is a "The Protected - Dusk Angel" on your GY, this card is unaffected by other cards effects. Once per turn, during either players turn, if the opponent activates a spell, trap, or spell/trap effect, you can negate the activation of that card or effect, and destroy it. When this card destroys an opponents monster by battle, or inflicts battle damage to your opponent, you can force both players to reveal 1 monster in their hand, the player with the monster that has the highest revealed ATK, takes damage equal to the revealed monsters ATK, and discards that monster. You can only each effect of "The Protected - Angel Reaper" once per turn. You can only control 1 "The Protected - Angel Reaper". While this card is on the field, other monsters you control cannot attack. 

ATK: 3600

DEF: 0

(I've gtg, but this is the final boss of the deck, next time i'm on here, I'll put the other 3 Extra deck monsters, the 3 spells and 2 traps. )